
114 REPORT OF THE Dirgoror OF THE 
The following table gives the amount of food fed and its leading 
constituents, as also the milk yield and the amount of milk fat 
produced during five months, which averaged for the thirteen 
animals under this experiment, the eighth to the twelfth, both 
inclusive, of lactation, during which period the changes in the 
proximate composition of the food was most marked. 
The percentage of changes in the albuminoids, sugar and starch — 
and the crude fat in the food, as also in the milk yield and milk — 
fat produced.during this period of five months are as follows: 









| og od ° E m7 3 a 
eae ta, heen Baba bce 
zeg| 23 | ae) ted ee 
825 | sac of BO S oq 
Sai Yas 2 cS ad A = 
2 aa - me EB = B 5 
< wD 1) | av av 
ANG. ate os Ce cote 100°|- 100.) :100.|° 100; 100 100 
SL ee, 5 sin ohaine sy clats oe 94.5, 116 85 ; 100 99 99 
BULLS Gh hss’ 50 hs SRNR e ale,» ie'c O91). 128 77 92 | 106 | OF 
Beptember - se. eie. es va 115 88 65 14) 117 | 86 
MeLobers, . |. ¢hmee ss Same scMeey 95 | 110 61 68 | 117 | 77 
The above average as also the details of the table which follows 
is of much interest in connection with the question as to the 
function of the several food constituents in the animal economy. 
It will be seen that while the albuminoids in the food was 
increased nearly twenty-seven per cent the milk yield diminished 
twenty per cent, while the milk fat diminished but twelve per 
cent. ‘ 
In the detailed table as an average 78.93 pounds of albuminoids 
were fed during September, the average milk yield during the 
same month being 375.7 pounds, while during the previous month 
62.26 pounds of albuminoids were fed and the milk yield was 
467.5 pounds; this is a falling off in the milk yield of about 
twenty-per cent, while as we see upon page 77 the average 
falling off in milk between the tenth and eleventh month of 
lactation was upon an average 430.6 pounds to 402.2 pounds or 
_ 6.6 per cent. 
Again between September and October the average amount of 
albuminoids fed dropped from 78.93 pounds to 64.67 pounds or 






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